Interdigital cysts (furuncles) cause painful swellings between dog toes. Identifying underlying causes and appropriate treatment prevents recurrence and chronic welfare harm.
Interdigital furuncles cause pain with every step, causing dogs to lick excessively at affected feet, alter their gait, and show reluctance to walk on hard surfaces. Chronic or recurrent cases cause significant cumulative welfare harm over months or years of repeated painful episodes. The temptation to treat each flare-up symptomatically without investigating the underlying cause perpetuates a cycle of suffering. Underlying atopic dermatitis is the most common driver of recurrent interdigital disease — identifying and managing the atopy through allergen avoidance, immunotherapy, or targeted medication is the welfare-positive approach that breaks the cycle.